<template>
    <div>
      <li :class="isEnter ? 'active' : ''" @mouseenter="changActiveHandel('enter')" @mouseleave="changActiveHandel('leave') ">
        <label>
          <input type="checkbox" 
          :checked = "done"
          @click="changeChecked(id)"
          />
          <span>{{thing}}</span>
        </label>
        <button class="btn btn-danger" @click="deleteTodo(id)">删除</button>
      </li>
    </div>
</template>

<script>
    export default {
        name : 'Item',
        data(){
            return{
                isEnter:false
            }
        },
        props:["id" , "done" ,"thing" ,"deleteTodo","changeChecked"],
        methods:{
            changActiveHandel(type){
                this.isEnter = type === 'enter'
            }
        }
    }
</script>

<style lang="css" scoped>
/*item*/
li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}

li label {
  float: left;
  cursor: pointer;
}

li label li input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

li button {
  float: right;
  display: none;
  margin-top: 3px;
}

li:before {
  content: initial;
}
li.active{
    background: #ccc;
}
li.active button{
    display: block;
}
/* 
li:last-child {
  border-bottom: none;
} */
</style>